Researcher:
Kırcalı, Aslıhan

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Master Student

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Aslıhan

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Kırcalı

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Kırcalı, Aslıhan

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    Synthesis, Raman, FT-IR, NMR spectroscopic characterization, antimicrobial activity, cytotoxicity and DNA binding of new mixed aza-oxo-thia macrocyclic compounds
    (Elsevier France-Editions, 2009) Aghatabay, Naz Mohammed; Şen, Gürkan; Yazıcıoğlu, Meliha Burcu; Gücin, Fahrettin; Dülger, Başaran; Baş, Ali; Kırcalı, Aslıhan; PhD Student; Master Student; Graduate School of Sciences and Engineering; Graduate School of Sciences and Engineering; N/A; N/A
    Series of new mixed aza-oxo-thia macrocyclic ligands 1,9(2,6)-ditriazina-2,8,10,16-tetraaza-3,7,11,15-tetraoxo-5,13-dithia-cyclohexadecaphan-1(4),9(4)-diphenyl (L-1); 1,10(2,6)-ditriazina-2,9,11,18-tetraaza-3,8,12, 17-tetraoxo-5,6,14,15-tetrathia-cyclooctadecaphan-1(4),10(4)-diphenyI (L-2); 1,11(2,6)-ditriazina-2,10,12,20-tetraaza-3,9,13,19-tetraoxo-6,16-dithia-cyclocosa-phan-1(4),11(4)-diphenyl (L-3); 1,12(2,6)-ditriazina-2,11,13,22-tetraaza-3,10,14,21-tetraoxo-6,7,17,18-tetrathia-cyclodocosaphan-1(4),12(4)-diphenyl (L-4) were synthesised. The structural features of the compounds have been studied by elemental analyses, Mass, FT-Raman, FT-IR, H-1 and C-13 NMR spectroscopy. The antimicrobial activities of the ligands were evaluated using disk diffusion method in dimethyl sulfoxide (DMSO) as well as the minimal inhibitory concentration (MIC) dilution method, against several bacteria and yeast cultures. The obtained results from both methods were assessed in side-by-side comparison with commercial antibacterial and antifungal agents. In most cases, the compounds show strong antifungal activity in the comparison tests. Cytotoxic activities of the ligands against two different human cancer cell lines, stomach (23132/87) and lung (A549) were determined by MTT assay. DNA fragmentation assay tested cell lines were used to analyze the DNA ladder formation which is a characteristic of apoptotic cell death. The binding of the ligands with calf thymus DNA (CT-DNA) has also been investigated by absorption spectroscopy.